Fountain pen



Maw- ZU, w23.

I kV J. BENZ FOUNTAIN PEN Filed oct.

INVENTOR.

l ATTORNEY.

lil/lan 2li), 19233.,

MELVIN J'. SENZ, OF PORT ANGELES, `ilASHNGfT02N".

FOUNTAIN PEN.

Application led October 1, 1921. Serial No. 504,743.

To @ZZ whom t may concern:

Be it known that l, ll/lnLviN J. SENZ, a citizeny of the TJnited States, residing at Port Angeles, in the county of Clallani and State of lllashington, have invented certain new and useful lmprovements in Fountain Pens, of which the following is a specification.

rlhis invention relates to fountain pens of the self-lling type, and has for one of its io objects to increase the efficiency and utility and simplify the construction of devices of this character.

l/Vith these and other objects in view the invention consists in certain novel features le of Construction hereinafter shown and described and then specifically pointed out in the claims`r and in the drawings illustrative of the preferred embodiment of the invention.

2o Figure 1 is a longitudinal sectional elevation.

TEigiire 2 is a view of the piston and a portion of its operating rod.

Figure 3 is a transverse section on the line 3 3 of Fig. 1, looking in the direction of the arrow.

Figure 4 is a line 4 4 of Fig. of the arrow.

Figure 5 is a longitudinal section of a modified construction.

The improved device comprises a barrel port-ion 10 internally threaded at the ends to support an extension 11 at one end and a packing element at the other end, the latter comprising threaded stop washers 12 and 13 and a yieldable packing element le between the washers.

The extension member 11 is tubular, and

fitting within the tubular portion is a plug 15 projecting beyond the outer end of the extension 11 as shown at 17 and having an ink feed or passage 16 at one side. The pen point, represented at 18, is supported atits inner end between the plug 15 and the extension 11 and bears over the projection 17 and covers a part of the feed passage 16 as shown, the passage terminating at the base or inner end of the cleft in the pen point,

as indicated at 19.

Movable through the packing element 12--13-1e, is a rod 2O having pull lrnob 21 at the outer end and carrying a plunger or piston 22 at the other end.

transverse section on the 1, looking in the direction -to groove or channel 16, rod 20 will then be rlhe rod 20 is enlarged next to the plunger 55 22 as shown at 23, the enlarged portion being tubular and the piston 22 being likewise tubular, the bore or tubular part of the rod enlargement and of the piston registering7 as shown.

Transverse guide passages 24 are formed through the enlargement 23 of the rod and communicate with the bore of the enlargement.

Slidable in the bores of the portions 22 65 and 23 is a valve device 25 having its opposite faces flattened for a part of its length as shown at 26, to form passages for the air and inlr through the piston, as hereafter en plained.

A stop pin 27 is supported through the valve member 25 and extends through the guide passages 241 and projects at the ends beyond the rod enlargement 23 as shown.

rllhe interior of the barrel 10 is reduced 75 adjacent the packing receiving end to form a stop shoulder 2S to be engaged by the projecting ends of the stop pin 27 and thus limit the movement of the valve member, as hereafter shown.

W ith the device thus constructed the operation is as follows Assuming that the barrel 10 is empty, the rod 20 is first drawn outwardly which movement will carry the valve member 25 with it 85 in the same relative position to the piston as shown in Figure' 1.

The extended ends of the pin 27 engage the shoulder 28 when further movement Vof the valve will be checked. The outward movement of the rods 2() is continued closing passages 26 until the piston reaches the pin 27 when the further outward movement of the piston will be checked.

As the piston moves toward the outer end of the barrel, the air that is in the barrel will pass from one side of the piston to the other through the passages 26. `With pen point in the inlr far enough to close the inlet 10D moved into the barrel carrying the piston with it and expelling the air from the bar rel but` not permitting air to pass through the piston owing to its position against the pin 27. `When the rod `2O reaches al point 105 near the inner end of its stroke, the inner end of the valve, which -is projecting a considerable distance in advance of the piston,

engages the inner end of the member 15. The downward movement of the rod 2O continuing opens the pasageways 26 as shown in Figure 1, and permits the atmospheric pressure to force the ink into the barrel m which a partial vacuum has been produced.

Thereafter the pen acts in the usual manner.

In Fig. 5 a modified structure is shown whereby a leakless fountain pen is produced. In the modified structure the barrel 10 is reduced toward the pen point end, as shown at 29, and perferably externally threaded as at 3() and adapted to support a cap member, not shown.y The portion 29 is formed with an inwardly directed annular stop shoulder 31.

A sleeve 32 is coupled to the outer end of the barrel 10, the inner end of the sleeve serving the same purpose of the shoulder 28 of the structure shown in Fig. 1.

The outer part of the sleeve 32 is internally threaded to receive packing elements 33-34 and 35 similar to the packing elements 12F-13 and 14.

A collar 36 engages within the reduced portion 29 of the barrel and bears normally against the stop shoulder 31 which thus limits the outward movement of the collar.

The rod 20, piston 22 with its enlargement 23 and guide slots 24, are precisely the same in the modified structure as in the structure shown in Fig. 1, and are supplied with the same reference characters, while the. pull knob for the rod 20 and indicated at 37, is slightly modified and externally threaded to engage a slide member 38 which bears loosely over the sleeve 32 and the adjacent portion of the barrel 10.

In the modified structure the valve and the plug member 15 are integral and indicated as a whole by the character 39 with an extension 40 corresponding to the extension 17 and provided with an ink groove or passage 41 corresponding to the passage .16.

The member 39 is also provided with fla-ttened portions 42 and pin 43 coresponding to the flattened portions 26 and pin 27 and operating in the same manner.

In the modified structure, when the rod 20 is drawn outwardly, themember 39 together with the ferrule 36 and the pen point 19 are carried with it into the barrel until the projecting ends of the pin 43 engage the inner end of the sleeve 32 in the same manner as the pin 27 engages the shoulder 28 in the structure shown in Fig. 1.

Then as the rod 20 is forced inwardly the piston 22 expels the air and the collar 36 is seated against the shoulder 31, which operates to limit the outward movement of the member 39 and its pen point.

The filling operation is the same as in the structure shown in Fig. 1.

The impro-ved'device may be constructed of any suitable material, preferably hard rubber as in ordinary fountain pens, and may be formed in various sizes as preferred.

The preferred embodiment of the invention is disclosed in the drawings and set forth in the specification, butl it will be understood that modifications within the scope of the claimed invention may be made in the construction without departing from the principle of the invention or sacrificing any of its advantages.

Having thus described the invention, what I claim as new is 1. A fountain pen comprising a barrel member formed with an intermediate inl: receptacle and a pen point support and with an ink passage through the support, an annular piston operable in the barrel, a valve device comprising a body movable' through the piston and having ink passages for a. portion of its length, an operating rod extending from said piston andhaving a tubular enlargement next to the piston and with which the valve member is relatively movable, said enlargement having combined guideways and ink passages therethrough, and a stop pin extending through the valve device and projecting beyond the enlargement of the operating rod, whereby the movement of the valve member relative to the operating rod is controlled.

2. A fountain pen comprising a. barrel member, formed with an intermediateink receptacle and a pen point support and with an ink passage through the support,l said barrel having an internal stop shoulder, an annular piston operable in the barrel, a valve device comprising a body movable through the piston and having ink passages for a portion of its length, an operating rod extending from said piston and having a tubular enlargement next to the piston and with which the valve member is relatively movable, said enlargement having combined guideways and ink passages therethrough, and a stop pin extending through the valve device and projecting beyond the enlargement of the operating rod, and adapted to engage the stop shoulder when the operating rod is withdrawn, whereby the movement of the valve member relative to the operating rod is controlled.

3. A fountain pen comprising a barrel member formed with an intermediate ink receptacle and an inwardly directed stop shoulder at the pen point supporting end, a slee-ve engaged with the outer end of the barrel and including an annular stop shoulder, a combined valve device and pen point support having ink passages therethrough, a ferrule attached to the pen point support and limited in its movement in one direction by the annular stop shoulder, an annular piston operating in the barrel and to which a valve operates, an operating rod extending from said piston and ment of the operating rod, and engagea-ble movable through said sleeve and having a With the inner end of the sleeve when the tubular portion Within which the valve is operating rod is withdrawn. 10 movable, said enlargement having combined In testimony whereof, I aHiX my signature guideways and ink passages therethrough, hereto.

and a stop pin extending through' the valve device and projecting beyond the enlarge- MELVIN J. SENZ. 

